公开(公告)号：US08483348B2

公开(公告)日：2013-07-09

申请号：US13527788

申请日：2012-06-20

申请人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C1/22 ,  G21C19/28 ,  G21C9/00 ,  G21C23/00 ,  G21C1/04

CPC分类号： G21C3/331 ,  G21C3/3315 ,  Y02E30/40

摘要： A hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which provides a hold-down force upon the nuclear fuel assembly under start-up conditions or hot full power conditions of a nuclear reactor, and a second spring which provides an additional hold-down force upon the nuclear fuel assembly under start-up conditions of the nuclear reactor. The hold-down margin under start-up conditions or hot full power conditions is reduced, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.

摘要翻译： 用于核燃料组件的顶部喷嘴的压紧弹簧单元。 压紧弹簧单元联接到核燃料组件的顶部喷嘴的上端。 压紧弹簧单元包括第一弹簧，其在核反应堆的启动条件或热全功率条件下向核燃料组件提供压紧力，以及向第二弹簧提供额外的压紧力 核燃料组件在核反应堆的启动条件下。 在启动条件或热全功率条件下的压紧余量减少，从而提高核燃料组件的机械和结构稳定性。

公开(公告)号：US20120246933A1

公开(公告)日：2012-10-04

申请号：US13524254

申请日：2012-06-15

申请人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： B23P17/00

CPC分类号： G21C3/331 ,  G21C3/3315 ,  G21C21/00 ,  Y02E30/40 ,  Y10T29/494 ,  Y10T29/49432

摘要： A top nozzle is provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.

摘要翻译： 提供顶部喷嘴。 顶部喷嘴可以包括联接板，周边壁和压紧弹簧单元。 联接板可以联接到核燃料组件的导向套管。 周边壁可以从联接板的周边向上突出。 可以在周壁的上表面上设置弹簧夹。 压紧弹簧单元可以以这样的方式安装到周壁的上表面，以将压紧弹簧单元的相应端部联接到弹簧夹。 紧固销孔可以通过弹簧夹的上表面垂直地形成。 弹簧插入孔，压紧弹簧单元可以通过放电加工在压紧弹簧的插入方向上插入和形成。

公开(公告)号：US08477900B2

公开(公告)日：2013-07-02

申请号：US12748369

申请日：2010-03-26

申请人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C3/32

CPC分类号： G21C3/331 ,  G21C3/3315 ,  Y02E30/40

摘要： A hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which provides a hold-down force upon the nuclear fuel assembly under start-up conditions and hot full power conditions of a nuclear reactor, and a second spring which provides an additional hold-down force upon the nuclear fuel assembly under start-up conditions of the nuclear reactor. The hold-down margin under start-up conditions and hot full power conditions is reduced, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.

摘要翻译： 用于核燃料组件的顶部喷嘴的压紧弹簧单元。 压紧弹簧单元联接到核燃料组件的顶部喷嘴的上端。 压紧弹簧单元包括第一弹簧，其在核反应堆的启动条件和热全功率条件下向核燃料组件提供压紧力，第二弹簧提供额外的压紧力 核燃料组件在核反应堆的启动条件下。 在启动条件和热全功率条件下的压紧余量减少，从而提高核燃料组件的机械和结构稳定性。

公开(公告)号：US20110182396A1

公开(公告)日：2011-07-28

申请号：US12749470

申请日：2010-03-29

申请人： NAM GYU PARK ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： NAM GYU PARK ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C3/32

CPC分类号： G21C3/32 ,  G21C3/3305 ,  Y02E30/40

摘要： A guide thimble plug for a nuclear fuel assembly is provided, in which an internal threaded hole is formed through a main body so that the main body is coupled to a bottom nozzle by a screw coupling. An upper insert part is formed in the upper end of the main body. The upper insert part is inserted into a shock absorption tube. A thermal deformation prevention part is formed on the main body below the upper insert part and is recessed inward from the outer surface of the main body such that, when the main body is coupled to the guide thimble, a gap is defined between the thermal deformation prevention part and the guide thimble. The guide thimble and the shock absorption tube can be reliably fastened to the bottom nozzle, and thermal deformation of the guide thimble can be minimized.

摘要翻译： 提供了一种用于核燃料组件的导向套筒塞，其中内螺纹孔通过主体形成，使得主体通过螺纹联接件联接到底部喷嘴。 上部插入部分形成在主体的上端。 将上部插入部分插入减震管中。 一个热变形防止部分形成在主体下面的上插入部分上，并且从主体的外表面向内凹入，使得当主体联接到导向套管时，在热变形 预防部分和导向套管。 引导套管和减震管可以可靠地固定到底部喷嘴，并且导引套管的热变形可以最小化。

公开(公告)号：US20110182394A1

公开(公告)日：2011-07-28

申请号：US12748367

申请日：2010-03-26

申请人： JOON KYOO PARK ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： JOON KYOO PARK ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C3/02 ,  B21K21/08

CPC分类号： G21C3/331 ,  G21C3/3315 ,  G21C21/00 ,  Y02E30/40 ,  Y10T29/494 ,  Y10T29/49432

摘要： A top nozzle for a nuclear fuel assembly and a method of manufacturing the top nozzle are provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.

摘要翻译： 提供了用于核燃料组件的顶部喷嘴和制造顶部喷嘴的方法。 顶部喷嘴可以包括联接板，周边壁和压紧弹簧单元。 联接板可以联接到核燃料组件的导向套管。 周边壁可以从联接板的周边向上突出。 可以在周壁的上表面上设置弹簧夹。 压紧弹簧单元可以以这样的方式安装到周壁的上表面，以将压紧弹簧单元的相应端部联接到弹簧夹。 紧固销孔可以通过弹簧夹的上表面垂直地形成。 弹簧插入孔，压紧弹簧单元可以通过放电加工在压紧弹簧的插入方向上插入和形成。

公开(公告)号：US20110182395A1

公开(公告)日：2011-07-28

申请号：US12748369

申请日：2010-03-26

申请人： JOON KYOO PARK ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： JOON KYOO PARK ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C3/02

CPC分类号： G21C3/331 ,  G21C3/3315 ,  Y02E30/40

摘要： Disclosed herein is a hold-down spring unit for a top nozzle of a nuclear fuel assembly. The hold-down spring unit is coupled to the upper end of the top nozzle of the nuclear fuel assembly. The hold-down spring unit includes a first spring which acts against a hold-down force with respect to the nuclear fuel assembly under start-up conditions or hot full power conditions of a nuclear reactor, and a second spring which acts against a hold-down force with respect to the nuclear fuel assembly under start-up conditions of the nuclear reactor. The present invention reduces the hold-down margin under start-up conditions or hot full power conditions, thus enhancing the mechanical and structural stability of the nuclear fuel assembly.

摘要翻译： 本文公开了一种用于核燃料组件的顶部喷嘴的压紧弹簧单元。 压紧弹簧单元联接到核燃料组件的顶部喷嘴的上端。 压紧弹簧单元包括第一弹簧，其在核反应堆的启动条件或热全功率条件下抵抗相对于核燃料组件的压紧力，以及第二弹簧， 在核反应堆的启动条件下对核燃料组件的下降力。 本发明在启动条件或热全功率条件下降低了压紧余量，从而提高了核燃料组件的机械和结构稳定性。

公开(公告)号：US08958520B2

公开(公告)日：2015-02-17

申请号：US13524254

申请日：2012-06-15

申请人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： Joon Kyoo Park ,  Jin Seok Lee ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Gi-Jun Gwon ,  Nam Gyu Park ,  Kyong Bo Eom ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C21/00 ,  G21C21/16 ,  G21C3/33

CPC分类号： G21C3/331 ,  G21C3/3315 ,  G21C21/00 ,  Y02E30/40 ,  Y10T29/494 ,  Y10T29/49432

摘要： A top nozzle is provided. The top nozzle can include a coupling plate, a perimeter wall and a hold-down spring unit. The coupling plate can be coupled to a guide thimble of the nuclear fuel assembly. The perimeter wall can protrude upwards from the perimeter of the coupling plate. A spring clamp can be provided on the upper surface of the perimeter wall. The hold-down spring unit can be mounted to the upper surface of the perimeter wall in such a way to couple a corresponding end of the hold-down spring unit to the spring clamp. A fastening pin hole can be vertically formed through an upper surface of the spring clamp. A spring insert hole into which the hold-down spring unit can be inserted and formed by electro-discharge machining in an insert direction of the hold-down spring.

摘要翻译： 提供顶部喷嘴。 顶部喷嘴可以包括联接板，周边壁和压紧弹簧单元。 联接板可以联接到核燃料组件的导向套管。 周边壁可以从联接板的周边向上突出。 可以在周壁的上表面上设置弹簧夹。 压紧弹簧单元可以以这样的方式安装到周壁的上表面，以将压紧弹簧单元的相应端部联接到弹簧夹。 紧固销孔可以通过弹簧夹的上表面垂直地形成。 弹簧插入孔，压紧弹簧单元可以通过放电加工在压紧弹簧的插入方向上插入和形成。

公开(公告)号：US08811566B2

公开(公告)日：2014-08-19

申请号：US12749470

申请日：2010-03-29

申请人： Nam Gyu Park ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

发明人： Nam Gyu Park ,  Gi-Jun Gwon ,  Kyeong Lak Jeon ,  Jung Min Suh ,  Jin Seok Lee ,  Kyong Bo Eom ,  Joon Kyoo Park ,  Jin Sun Kim ,  Dong Geun Ha ,  Kyoung Joo Kim

IPC分类号： G21C5/04 ,  G21C3/32 ,  G21C3/33

CPC分类号： G21C3/32 ,  G21C3/3305 ,  Y02E30/40

摘要： A guide thimble plug for a nuclear fuel assembly is provided, in which an internal threaded hole is formed through a main body so that the main body is coupled to a bottom nozzle by a screw coupling. An upper insert part is formed in the upper end of the main body. The upper insert part is inserted into a shock absorption tube. A thermal deformation prevention part is formed on the main body below the upper insert part and is recessed inward from the outer surface of the main body such that, when the main body is coupled to the guide thimble, a gap is defined between the thermal deformation prevention part and the guide thimble. The guide thimble and the shock absorption tube can be reliably fastened to the bottom nozzle, and thermal deformation of the guide thimble can be minimized.

摘要翻译： 提供了一种用于核燃料组件的导向套筒塞，其中内螺纹孔通过主体形成，使得主体通过螺纹联接件联接到底部喷嘴。 上部插入部分形成在主体的上端。 将上部插入部分插入减震管中。 一个热变形防止部分形成在主体下面的上插入部分上，并且从主体的外表面向内凹入，使得当主体联接到导向套管时，在热变形 预防部分和导向套管。 引导套管和减震管可以可靠地固定到底部喷嘴，并且导引套管的热变形可以最小化。